The article demonstrates how a misconfigured NFS export with the no_root_squash option can be abused to elevate a low‑privilege user to root by mounting the share, planting a SUID binary, and executing it, and then outlines practical mitigation steps.
This comprehensive guide explains the most common Linux privilege‑escalation vectors—including unsafe SUID binaries, sudo misconfigurations, cron jobs, password and SSH‑key leaks, kernel vulnerabilities, container escapes, and file‑permission flaws—while providing concrete detection commands and practical hardening steps for each risk.
This guide walks beginners through Linux's three ownership categories and three basic rights, explains symbolic and numeric permission notations, demonstrates chmod and chown usage with real‑world scenarios, and covers special bits like SUID, SGID, and the sticky bit.
This article systematically details the most frequently encountered privilege‑escalation flaws in penetration testing, covering Windows service misconfigurations, registry hijacking, kernel exploits, DLL hijacking, Linux SUID/SGID abuse, sudo misconfigurations, cron abuse, writable passwd files, and Docker escape techniques, along with step‑by‑step exploitation procedures and defensive recommendations.
This article explains why misconfigured Linux permissions cause security incidents, breaks down the 12‑bit permission model—including file type, owner/group/others bits and special SUID, SGID, and sticky bits—provides numeric examples, real‑world case studies, advanced techniques like umask, ACLs, batch changes, and offers best‑practice security recommendations and troubleshooting tips.
This guide explains Linux file and directory permissions, covering basic rwx modes, numeric and symbolic chmod, ownership changes with chown/chgrp, special bits like SUID/SGID/SBIT, umask calculations, hidden attributes via chattr/lsattr, ACL management with setfacl/getfacl, and sudo configuration for secure privilege escalation.
This guide explains Linux file and directory permissions, numeric and symbolic representations, special bits like SUID/SGID/sticky, ownership changes with chown/chgrp, default umask behavior, and detailed ACL usage with practical examples and command snippets.
This guide walks through Linux file permission fundamentals, covering owner/group concepts, numeric and symbolic chmod usage, chown ownership changes, umask defaults, special bits like SUID, SGID and Sticky, ACL management with setfacl/getfacl, sudo configuration, and essential system administration commands.
This guide explains Linux permission basics, the special SUID/SGID/sticky bits, and shows how to use the powerful find command to locate files by name, timestamps, size, or exact permissions, complete with practical code examples.
This comprehensive guide explains Linux permission fundamentals, user and group management, file permission modes, special bits like SUID, SGID and Sticky, hidden attributes with chattr/lsattr, ACL configuration, and privilege escalation using su and sudo, complete with practical command examples.
This guide explains Linux file permission concepts—including owner, group, and others permissions, numeric and symbolic representations, default settings, the role of umask, and advanced features like ACLs, special bits, and immutable attributes—while providing practical command examples for managing files and directories securely.
This guide explains Linux's SUID, SGID, and sticky bit permissions, shows how to inspect them with stat and ls, and provides step‑by‑step commands to set, verify, and revoke these special bits on files and directories.
This comprehensive guide explains Linux privilege escalation, covering horizontal and vertical privilege upgrades, essential information‑gathering commands, kernel vulnerability exploitation, sudo abuse, SUID/SGID misconfigurations, cron job hijacking, NFS weak permissions, and PATH misconfigurations, with practical examples and code snippets for each technique.
This article demonstrates multiple techniques for abusing the PATH environment variable and SUID binaries on Linux systems to gain root privileges, providing step‑by‑step lab setup, C source examples, compilation commands, and exploitation methods commonly used in CTF challenges.
